VI

LIST OF CONTRIBUTORS

COBLKHTB, W. \V., Ph. IX, Bureau c.f Standard*, U.H.A. % lufm-red TninHinitwum and Refraction Data. lliuliaticm, IK'U'rminatum of (JoiiHtanls of.

CONUAUY, A. K, I'ml'muir of Optical iKwign, Imperial College e, Opl.ius of the.

ii-j, MWH A. HARHAUA, M.A.

I/iui«*ft, Ti'Btitig (if Hittipk. I'(»lnri«t«l Light.

DARWIN, 0. a, M.A., F.U.H. . Quaiituin Theory.

JI, JAMKM WKIU, ixSi1,., K.Inht.P.

itogniph, Tin1. iml I'urtH, The Working of.

UA«nt,K, CUAM. W., M.Se.Tt'ch,, (XH.I-;. (Mililury) 1'hutographiii Appuwtun.

x, K. S., I'h.D., llnrwui tif SuuulanU, U.S.A.

J., A.lUJ.Hi!., I). 1,0., K.I nut I'. tiou (Jratinp Theory.

EytS Tin-.

A. II. I).

,r. vv. K.

K. H. tl,

1i

m

Hisjriuor, K. O., Mnjur UK. (tvt,), K.H.A.S., UivitKtl {"in-U-s (with (!. W. W

HuwyZng aiul Surveying tiiHtr Th«'<Ki«ilitr, Tin-.

HlIA, A, V., Hr.I)., F.it.H. .

, Thf .Mirrt»r.

4¥E, (!. W. ('., O.B.R, M.A., D.HP. .

t,P., Awocintc Iimt.C.K. . K. «». H.

A. V. II.

(i. W. (', K,

AMII, II, IvSi-,, K.U.S.

i« VjlinitSoiiH uf,

II,